Spindle rotating speed changing device of numerical control lathe

Abstract

The utility model provides a numerical control lathe spindle rotating speed changing device which comprises a data input unit, a frequency converter and a motor, the device is arranged on a numerical control lathe, the input end of the frequency converter is connected with a three-phase power supply, the output end of the frequency converter is connected with the motor, and the data input unit is connected with the frequency converter. The frequency converter is connected with a simulation spindle end of the numerical control system through a cable and a plug. The motor speed of the numerical control lathe can be automatically adjusted directly according to the attributes of products needing to be machined, the speed change requirement of a spindle of the numerical control lathe is met, the labor intensity of operators is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of spindle speed changing devices, in particular to a spindle speed changing device for a numerically controlled lathe. Background Art

[0002] CNC lathes are one of the most widely used CNC lathes at present. They are mainly used for cutting inner and outer cylindrical surfaces of shaft parts or disc parts, inner and outer conical surfaces of arbitrary cone angles, complex rotating inner and outer curved surfaces, and cylindrical and conical threads. Flywheels, brake discs and other commonly used parts in automobiles have lines on the surface after processing, which cannot meet the product quality requirements. Different speeds are required for turning different parts of the same product to achieve the surface roughness required by the process. In actual production life, the multiple different parts of the product increase the need to switch different speeds, which increases the work intensity of the operators. The speed of traditional CNC lathes cannot be adjusted, the production efficiency is low, and it cannot meet the production and product quality requirements.

[0003] Therefore, how to design a frequency converter device for CNC lathes that is easy to adjust the speed is a technical problem that needs to be solved urgently. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides a spindle speed changing device for a CNC lathe to solve at least one of the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the technical solution provided by this application is as follows.

[0006] According to one aspect of the embodiments of the present application, a spindle speed changing device for a CNC lathe is provided, comprising:

[0007] The CNC machine tool is provided with an analog spindle end of the CNC system XS30, and the device includes a data entry unit, a frequency converter and a motor. The input end of the frequency converter is connected to a three-phase power supply, the output end of the frequency converter is connected to the motor, the data entry unit is connected to the frequency converter, and the control end of the frequency converter is connected to the analog spindle end of the CNC system XS30 through a cable and a plug.

[0008] In one embodiment of the present application, the device further includes an electric control box, the electric control box is fixed to the CNC machine tool via a connector, and the frequency converter is disposed in the electric control box.

[0009] In one embodiment of the present application, the connecting member includes a bolt, a nut, and a rivet.

[0010] In one embodiment of the present application, the data entry unit includes a touch panel and a keyboard.

[0011] In one embodiment of the present application, the plug cooperates with the analog spindle end plug of the numerical control system, the model of the plug is DB9F, and the model of the analog spindle end plug is DB9M.

[0012] In one embodiment of the present application, the cable is a twisted-pair shielded cable.

[0013] In one embodiment of the present application, one end of the first cable is connected to the 0V end of the analog spindle end plug, and the other end of the first cable is connected to the GND end of the inverter.

[0014] In one embodiment of the present application, one end of the second cable is connected to the SVC end of the simulated spindle end plug, and the other end of the second cable is connected to the A12 end of the inverter.

[0015] The present application provides a CNC lathe spindle speed change device, which includes a data entry unit, a frequency converter and a motor. The device is set on a CNC machine tool, the input end of the frequency converter is connected to a three-phase power supply, the output end of the frequency converter is connected to the motor, the data entry unit is connected to the frequency converter, and the frequency converter and the analog spindle end of the CNC system are connected by cables and plugs. The present application can automatically adjust the motor speed of the CNC lathe according to the properties of the product to be processed, meet the speed change requirements of the CNC lathe spindle, reduce the labor intensity of the operator, and improve production efficiency.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present utility model, and together with the specification, are used to explain the principles of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 It is a block diagram showing the connection relationship of a spindle speed change device of a CNC lathe according to an exemplary embodiment of the utility model;

[0019] Figure 2 is a schematic diagram of a motor drive circuit shown in an exemplary embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of a simulated spindle interface connection shown in an exemplary embodiment of the utility model;

[0021] Figure 4It is a schematic diagram of a rear cover socket of a numerical control system shown in an exemplary embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the connection between a frequency converter and a numerical control system shown in an exemplary embodiment of the utility model. DETAILED DESCRIPTION

[0023] The following will describe the implementation of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0025] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0026] CNC lathes are one of the most widely used CNC lathes at present. They are mainly used for cutting inner and outer cylindrical surfaces of shaft parts or disc parts, inner and outer conical surfaces of arbitrary cone angles, complex rotating inner and outer curved surfaces, and cylindrical and conical threads. Flywheels, brake discs and other commonly used parts in automobiles have lines on the surface after processing, which cannot meet the product quality requirements. Different speeds are required for turning different parts of the same product to achieve the surface roughness required by the process. In actual production life, the multiple different parts of the product increase the need to switch different speeds, which increases the work intensity of the operators. The speed of traditional CNC lathes cannot be adjusted, the production efficiency is low, and it cannot meet the production and product quality requirements.

[0027] See also Figure 1 , Figure 1 It is a block diagram showing the connection relationship of a spindle speed change device of a CNC lathe according to an exemplary embodiment of the utility model.

[0028] like Figure 1 As shown, in an exemplary embodiment of the present application, the present application provides a spindle speed changing device for a CNC lathe: the device is arranged on a CNC machine tool, and an analog spindle end of a CNC system is provided on the CNC machine tool. The device includes a data entry unit, a frequency converter and a motor. The input end of the frequency converter is connected to a three-phase power supply, the output end of the frequency converter is connected to the motor, the data entry unit is connected to the frequency converter, and the control end of the frequency converter is connected to the analog spindle end of the CNC system through a cable and a plug.

[0029] In detail, the device also includes an electric control box, which is fixed to the CNC machine tool through a connector, and the frequency converter is arranged in the electric control box. Due to the need to consider the location of machine tool maintenance, the electric control box is fixed to the CNC machine tool, and the frequency converter is installed inside the electric control box to prevent iron filings and dust from affecting the service life of the frequency converter.

[0030] In more detail, the connecting parts include bolts, nuts, rivets, etc., which are used to fix the electric control box on the CNC machine tool, but are not limited to these.

[0031] Specifically, the data entry unit includes a touch panel and a keyboard. Data entry can be performed through the touch panel or the keyboard.

[0032] See also Figure 2 , Figure 2 It is a schematic diagram of a motor drive circuit shown in an exemplary embodiment of the present utility model.

[0033] like Figure 2 As shown, the input terminals (R, S, T) of the frequency converter are connected to a three-phase power supply, and the output terminals (U, V, W) of the frequency converter are connected to a motor M to drive the motor.

[0034] See also Figure 3 , Figure 3 It is a schematic diagram of a simulated spindle interface connection shown in an exemplary embodiment of the utility model.

[0035] See also Figure 4 , Figure 4 It is a schematic diagram of a rear cover socket of a numerical control system shown in an exemplary embodiment of the present utility model.

[0036] In detail, Figure 3 As shown, the plug cooperates with the analog spindle end plug of the CNC system. The plug model is DB9F, and the analog spindle end plug model is DB9M. Figure 3 As shown, the frequency converter is connected to the plug DB9M of the analog spindle of the numerical control system through a cable and a plug DB9F, wherein the numerical control system can be XS30 or other systems that can control the spindle.

[0037] See also Figure 5 , Figure 5 It is a schematic diagram of the connection between a frequency converter and a numerical control system shown in an exemplary embodiment of the utility model.

[0038] In more detail, Figure 5 As shown, the cables are two twisted shielded cables. The two twisted shielded cables can be RVVP2*0.5 square millimeters in specification, or other specifications can be selected. One end of the first cable is connected to the 0V end of the analog spindle end plug DB9M, and the other end of the first cable is connected to the GND end of the inverter. One end of the second cable is connected to the SVC end of the analog spindle end plug DB9M, and the other end of the second cable is connected to the A12 end of the inverter. Among them, the GND end of the inverter is the ground end of the inverter, and the A12 end of the inverter is the frequency adjustment end of the inverter.

[0039] It should be noted that the S1 terminal of the inverter controls the rotation direction of the motor, the COM terminal of the inverter is the common ground terminal, and the S1 terminal and COM terminal of the inverter are connected to the normally open contact of the DC24V relay.

[0040] See also Figure 1-Figure 5 The speed regulation principle of the CNC lathe spindle speed change device provided in this application is as follows:

[0041] The following principle description of the CNC lathe spindle speed change device is prior art, which is convenient for understanding the working principle of the device of this application: If the maximum speed of the CNC lathe motor is the preset speed value, the preset speed value is 1500r / min, and when the CNC lathe is started, the CNC lathe needs to be manually adjusted to the gear of the preset speed value. According to the attributes of the next product to be processed, the target speed is obtained as 500r / min, the target speed is input through the parameter entry unit, and the frequency of the inverter is changed through A12 of the inverter to adjust the speed of the motor to the target speed. The inverter transmits the frequency parameters to the analog spindle end of the CNC system XS30 through the plug and cable, and the rotation of the spindle is controlled by the CNC system XS30. If the current rotation direction of the motor is the same as the direction of the target speed, keep the original direction; if the current rotation direction of the motor is opposite to the direction of the target speed, change the rotation direction of the motor through the S1 end of the inverter.

[0042] The present application provides a CNC lathe spindle speed change device, which includes a data entry unit, a frequency converter and a motor. The device is set on a CNC machine tool, the input end of the frequency converter is connected to a three-phase power supply, the output end of the frequency converter is connected to the motor, the data entry unit is connected to the frequency converter, and the frequency converter and the analog spindle end of the CNC system are connected by cables and plugs. The present application can automatically adjust the motor speed of the CNC lathe according to the properties of the product to be processed, meet the speed change requirements of the CNC lathe spindle, reduce the labor intensity of the operator, and improve production efficiency.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A CNC lathe spindle speed changing device, characterized in that: The device is arranged on a CNC machine tool, which is provided with an analog spindle end of a CNC system. The device comprises a data entry unit, a frequency converter and a motor. The input end of the frequency converter is connected to a three-phase power supply, the output end of the frequency converter is connected to the motor, the data entry unit is connected to the frequency converter, and the control end of the frequency converter is connected to the analog spindle end of the CNC system via a cable and a plug.

2. The CNC lathe spindle speed changing device according to claim 1, characterized in that: The device also includes an electric control box, which is fixed to the CNC machine tool through a connecting piece, and the frequency converter is arranged in the electric control box.

3. The CNC lathe spindle speed changing device according to claim 2, characterized in that: The connecting parts include bolts, nuts and rivets.

4. The CNC lathe spindle speed changing device according to claim 1, characterized in that: The data entry unit includes a touch panel and a keyboard.

5. The CNC lathe spindle speed changing device according to claim 1, characterized in that: The plug cooperates with the analog spindle end plug of the numerical control system. The model of the plug is DB9F, and the model of the analog spindle end plug is DB9M.

6. The CNC lathe spindle speed changing device according to claim 1, characterized in that: The cables are two twisted-pair shielded cables.

7. The spindle speed changing device for a CNC lathe according to claim 6, characterized in that: One end of the first cable is connected to the 0V end of the analog spindle end plug, and the other end of the first cable is connected to the GND end of the inverter.

8. The CNC lathe spindle speed changing device according to claim 6, characterized in that: One end of the second cable is connected to the SVC end of the analog spindle end plug, and the other end of the second cable is connected to the A12 end of the inverter.

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